Roofing



A. S. SPIEGEL.

ROOFING.

APPLI ATION FILED APR. 6. 1911.

Patented Sept. 30, 1919.

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a Marl w-m 2 ALEXANDER S. SPIEG-EL, OF CHICAGO, ILLINOIS.

ROOFING.

Specification of Letters Patent. Patented Sept. 30, 1919.

Application filed April 6, 1917. Serial No. 160,196.

To all whom it may concern Be it known that I, ALEXANDER S. SPIEGEL, of Chicago, Illinois, have invented certain new and useful Improvements in Roofing, of which the following is a specification.

In the manufacture of roofing material whether in sheet form or in the shape of shingles, it has been customary to use a felt material saturated with a waterproof compound, and as this base material is very expensive I have aimed to substitute a cheaper material for it and to this end I take cheap paper such as that made of straw board and wood pulp, and I find I get as good results as in the use of rag felt at present used. One advantage of the felt is that it readily absorbs the saturated compound while straw board and wood pulp is not of the same absorbent character, and to overcome this I propose to perforate the paper base, and to provide it with projections, and when this'paper base so prepared is treated with the compound the coating material passes through the perforations and adheres to the projections and forms as firm a connection with the paper base as the saturation of the ordinary felt material. Indeed when the ordinary felt material is not fully saturated in the preseent treatment it will separate in layers, this oecurrin particularly when the composition is applied cold. By my improvement I form a holding surface so that the coating interlocks with the projections and perforations on each side of the base so that the paper is covered and is contained within the center of the coating so that there is no exposure of the paper base and no warping whichwould occur if the paper were exposed to the weather.

It, Will be understood that I preferably use a paper of such a hard surface as to be practically non-absorbent, butI find just as good results are secured because a roofing does not last longer than the coating and hence a poor absorbent medium wholly covered and protected from the weather will last equally aswell and as long as the best saturated felt.

[In the accompanying drawing,

Figure 1 shows a sectional View of a sheet made in accordance with my invention;

Fig. 2 is a plan View of a section, and

Fig. 3 is a sheet showing the layers of the coating material applied thereto.

In carrying out my invention I take a sheet of material and pass it through a suitable machine having rollers with perforating punches on its periphery, and these rollers will punch out first on one side and then the other projections as shown in Fig. 1, with perforations at the base of the projections, and in passing this sheet through the composition or coatmg the material not only clings to the projections but interlocks by going through the perforations and in this way a number of coatings may be applied and the shingle or roofing strip made of any thickness according to the uses to which it is to be put.

By the use of the perforated sheet I amenabled to use a mixture of asphalt and solids, the solid material being cinder, asbestos, saw-dust, crushed stone or the like. The mixture may vary from ten per cent. asphalt and ninety per cent. solid down to all asphalt. The use of solids assists to make the roofing fire-proof and also eheapcns' covering material. Without the perforations this material could not be made to adhere to the base, but perforations permit the material to pass through and thus lock with the base.

What I claim is: I

1. As a new article of manufacture, roofing material comprising a base having an irregular surface, formed by pro ections struck therefrom extending from both sides, and composition coatings applied thereto.

2. As a new alticle of manufacture, a roofing material consisting of a base or center of paper of a comparatively non-absorbent character, said paper having rejections extending from each face in a tomato directions, and a composition lining or coating covering the sides of said paper base so as to protect it from exposure, substantially as described.

In testimon whereof I aflix my signature.

ALEXANDER S. SPIEGEL. 

